.what{
  width: 1130px;
  margin: 0 auto;
height: 600px;
line-height: 1;
}
.what h3{
  text-align: center;
  font-size: 34px;
  margin-top: 65px;
  color: #4f4f4f;
}

.what h4{
  text-align: center;
  font-size: 27px;
  margin: 22px 0 47px;
  color: #e60000;
}
.what>p{
  text-align: center;
  line-height: 22px;
}
.what ul{
  width: 1290px;
  margin:80px auto 0;
  height: 264px;

}
.what ul li{
  float: left;
  margin: 0 90px;
  text-align: center;
}
.what ul li div{
  width: 142px;
  height: 142px;
  border-radius: 142px;
  position: relative;
  overflow: hidden;
margin-bottom: 27px;
cursor: pointer;
}
.what ul li div img+img{
  position: absolute;
left: -142px;
top: 0;
transition: 0.1s linear;
}
.what ul li div:hover img+img{
  left: 0;
}
/* 案例 */
section{
  height: 1524px;
  width: 100%;
  background-color: #f7f7f7;
  line-height: 1;
  text-align: center;
  overflow: hidden;
}
section h3{
  font-size: 27px;
  color: #e60000;

margin-top: 70px;
}
section h4{
  font-size: 36px;
  color: #323232;

margin-top: 13px;
margin-bottom: 50px;
}
section nav{
 display: flex;
 justify-content: center;
}
section nav a{
  color:#333333;
  margin-right: 20px;
  line-height: 16px;
  font-size: 16px;
  display: flex;
  justify-content: center;
}
section nav a span{
  width: 34px;
  height: 16px;
  background-color: #d2d1d1;
  color: white;
  border-radius: 8px;
  margin-left: 8px;
  font-size: 10px;
}
section nav .active{
  color: #e60000;
}
section nav .active span{
  background-color: #e60000;
}
/* 展示/ */
section ul{
  width: calc( 100 - 15px);
  margin-left: 15px;
  display: flex;
  flex-wrap: wrap;
  margin: 40px;
}
section ul li{
  width: calc(25% - 25px);
  height: 391px;
   margin-right: 25px;
margin-bottom: 25px;
}
section ul li>img{
  width: 100%;
  height: calc(100% - 90px);
}
section ul li div{
  background-color: white;
  height: 90px;
  width: 100%;
  box-sizing: border-box;
  padding: 20px 17px 0 20px;
  text-align: left;
}
section ul li div h5{
  font-size: 17px;
  margin-bottom: 14px;
}
section ul li div p{
  color: #999;
}
section ul li div a{
  float: right;
  margin-top: -20px;
}
/* 项目 */
.touch{
  height: 360px;
  background-color: #ce0000;
  text-align: center;
  overflow: hidden;
}
.touch h3{
  color: white;
  font-size: 30px;
  margin: 70px 0 42px;
}
.touch img{
  margin: 0 auto;
}
.touch p{
  width: 140px;
  height: 44px;
  margin: 50px auto 0;
  border: 2px solid white;
  line-height: 44px;
  color: white;
}
/* 新闻 */
.news{
  height: 665px;
  background-color: #e4e4e4;
  overflow: hidden;
  line-height: 1;
}
.news h3{
  margin: 74px 0 22px;
  font-size: 24px;
  text-align: center;
  color: #838383;
}
.news h4{
  font-size: 28px;
  color:#3d3d3d;
height: 44px;
border-bottom: 1px solid #afafaf;
text-align: center;
width: 112px;
margin: 0 auto;
position: relative;
}
.news h4::after{
  content: "";
  height: 3px;
  width: 50px;
  background-color: #afafaf;
  position: absolute;
  bottom: -2px;
  left: 31px;

}
.news nav{
  display: flex;
  justify-content: center;

}
.news nav a{
  font-size: 15px;
  margin:40px 38px 26px;
  padding-bottom: 12px;
  border-bottom:  2px solid #e4e4e4;
  color: #333333;
}
.news nav .active{
  border-bottom:  2px solid #e60000;
position: relative;
color: #e60000;
}
.news nav .active::after{
content: "";
border: 4px solid rgba(0, 0, 0, 0);
border-top: 4px solid #e60000;
position: absolute;
bottom: -10px;
left: 28px;
}
.news ul{
  height: 362px;
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;
}
.news ul .active{
  height: 340px;
  background-color: white;
  width: 403px;
}
.news ul .active>div{
  display: flex;
}
.news ul .active>div .left{
  width: 87px;
  height: 68px;
  margin: 15px;
  text-align: center;
  line-height: 34px;
  color: white;
}
.news ul .active>div .left :nth-of-type(1){
  font-size: 22px;
  background-color: #c70c1f;
}
.news ul .active>div .left p+p{
  background-color: #a80011;
}

.news ul .active>div .right{
  margin: 24px 12px 0 0;
  line-height: 1;
}
.news ul .active>div .right p:nth-of-type(1){
  color: #d5001e;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
  width: 258px;
  font-size: 16px;
  margin-bottom: 15px;
}
.news ul .active>div .right p+p{
  display: flex;
  justify-content: space-between;
  color: #666666;
}

.news ul .active>div+p{
  margin: 0 16px 0 12px;
color: #818181;
line-height: 27px;
text-indent: 2em;
}



.news ul li+li{
  height: 98px;
  width: 475px;
  margin-bottom: 22px;
  margin-left: 29px;
  background-color: white;
  display: flex;
  line-height: 1;
}
.news ul li+li>p{
  width: 58px;
  height: 58px;
  background-color: #969393;
  color: white;
  margin: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.news ul li+li>p :nth-of-type(1){
  font-size: 17px;
  margin-top: 16px;
  margin-bottom: 10px;
  font-weight: 800;
}
.news ul li+li>div{
  padding-right: 27px;
  box-sizing: border-box;
}
.news ul li+li>div h5{
  margin: 22px 0 10px;
color: #333333;
font-weight: 800;
}
.news ul li+li>div p{
  line-height: 18px;
}